# Buffett Indicator hits 2007 high as 30‑year Treasury yields rise

**Published:** 2026-05-30T09:08:00.000Z  
**Topic:** Stock Market  
**Sentiment:** bearish  
**Publisher:** TrendWatcher — https://www.trendwatcher.in/article/9abc5790-bdc2-4b26-8e3b-bcf399e4e69c

The Buffett Indicator warns of overvaluation as 30‑year Treasury yields reach 5.18%, a level not seen since 2007, prompting concerns over future market drops.

The Buffett Indicator—total U.S. stock market capitalization divided by GDP—is flashing a warning level not seen since 2007, as the 30‑year Treasury yield climbs to 5.18% [2]. The metric, popularized by Warren Buffett, suggests that when the ratio spikes, stocks become expensive relative to the economy, raising the risk of a market correction.

**Key takeaways**
- The Buffett Indicator is at a historically high reading, echoing levels that preceded the 2007 market decline [1].
- The 30‑year Treasury yield hit 5.18%, its highest since July 2007, and has stayed above 5% for 12 straight days—the longest stretch since that year [2].
- In 2007, a similar yield surge was followed by a 20% drop in the S&P 500 and a 17% fall in the Nasdaq over the next year [2].
- Warren Buffett has long emphasized that interest rates are the most important factor in stock valuations, with higher yields compressing equity prices [2].
- Inflation pressures from the Iran conflict have pushed core PCE inflation to its highest levels in years, increasing the likelihood of Fed rate hikes in 2026 [2][3].

## Buffett Indicator reaches a warning zone

Shawn Tully of Fortune explains that the Buffett Indicator—market cap divided by GDP—has risen to a level comparable to the pre‑2000 bubble era, a range Buffett warned would be “playing with fire” when it approaches 200% [1]. The original 2001 Buffett essay linked a low ratio (70‑80%) to buying opportunities, while a high ratio signaled overvaluation. Today’s reading, driven by strong equity gains (S&P 500 up 16% and Nasdaq up 25% in two months) despite macro uncertainty, suggests the market may be overvalued relative to the underlying economy [2].

## Treasury yields and inflation pressure

The 30‑year Treasury yield’s climb to 5.18% marks the first time it has exceeded the 5% threshold for more than a dozen consecutive days since 2007, when it remained above 5% for 44 days [2]. Historically, such yield spikes have preceded market pullbacks; in 2007 the S&P 500 fell about 20% and the Nasdaq about 17% over the following year [2]. Buffett has repeatedly stressed that higher government bond yields reduce the present value of future earnings, tightening equity valuations [2].

The surge in yields is tied to rising inflation. The Iran conflict removed roughly 15% of global oil supply, pushing gasoline prices higher and lifting the Personal Consumption Expenditure (PCE) price index to a 3.8% year‑over‑year increase in April—the highest since May 2023 [2][3]. Core PCE inflation, which excludes food and energy, rose to 3.3%, its highest since October 2023, prompting investors to anticipate a Fed rate hike of at least a quarter point in 2026 [2][3].

## Why it matters

The convergence of a historically high Buffett Indicator and soaring long‑term Treasury yields signals heightened risk for equity investors. If yields remain elevated, the discount rate applied to future corporate earnings will stay high, potentially suppressing stock prices. Past episodes—most notably the 2007 yield spike—show that such conditions can lead to sizable market declines. Market participants, from corporate treasurers to individual investors, will be watching both the indicator and bond yields closely to gauge whether the current rally is sustainable or poised for correction.

## Sources
1. Fortune — [Warren Buffett’s favorite market indicator is flashing a warning](https://fortune.com/2026/04/20/warren-buffett-favorite-market-indicator-flashing-warning/)
2. The Motley Fool — [A Stock Market Indicator Flashes a Warning Last Seen in 2007 ...](https://www.fool.com/investing/2026/05/30/stock-market-warning-last-seen-2007-warren-buffett/)
3. Theglobeandmail — [A Stock Market Indicator Flashes a Warning Last Seen in 2007 ...](https://www.theglobeandmail.com/investing/markets/markets-news/motley/2213817/a-stock-market-indicator-flashes-a-warning-last-seen-in-2007-warren-buffett-explains-why-it-matters/)

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Cite as: TrendWatcher, "Buffett Indicator hits 2007 high as 30‑year Treasury yields rise", https://www.trendwatcher.in/article/9abc5790-bdc2-4b26-8e3b-bcf399e4e69c